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That changes nothing for me.
I have one exe in my base folder called medieval2.exe.
Then a folder called mods, which has 5 folders - Teutonic, Britannia etc and one called Third_Age_Reforged, which used to be my Third_Age folder, but which I renamed. In there I extracted the two downloads, so in my Third_Age_Reforged folder I have another folder called Third_Age_Reforged. In here I have the Reforged bat file and the data and cfg files.
Is that wrong? Because I have tried your fixes and it still says "could not find kingdoms.exe".